f << closeIn -- closes the input file f. closeIn f -- closes the input file f.
If the file was open only for input, then close is easier to use and has the same effect.
If the file was open for both input and output, it remains open for output.
Ways to use closeIn:
Manipulator Database -- see Manipulator -- the class of all file manipulators
Manipulator File -- see Manipulator -- the class of all file manipulators
Manipulator Nothing -- see Manipulator -- the class of all file manipulators
new Manipulator from Function -- see Manipulator -- the class of all file manipulators
methods(Manipulator) -- see methods -- list methods
Manipulator NetFile -- see NetFile -- the class of all net files
NetFile << Manipulator -- see NetFile -- the class of all net files